12. A study that involves no researcher intervention is called a. An experimental study. b. A noninvolvement study. c. An observational study. d. A quasi-experimental study.

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12. A study that involves no researcher intervention is
called
a. An experimental study.
b. A noninvolvement study.
c. An observational study.
d. A quasi-experimental study.
13. A variable that interferes with other variables in the
study is called
a. A confounding variable.
b. An explanatory variable.
c. An outcome variable.
d. An interfering variable.
Use the best answer to complete these statements.
14. Two major branches of statistics are.
and.
15. Two uses of probability are .
and
16. The group of all subjects under study is called a(n)
17. A group of subjects selected from the group of all
subjects under study is called a(n).
18. Three reasons why samples are used in statistics are
а.
b.
с.
19. The four basic sampling methods are
b.
c.
d.
а.
20. A study that uses intact groups when it is not possible
to randomly assign participants to the groups is called
a(n).
- study.
Transcribed Image Text:12. A study that involves no researcher intervention is called a. An experimental study. b. A noninvolvement study. c. An observational study. d. A quasi-experimental study. 13. A variable that interferes with other variables in the study is called a. A confounding variable. b. An explanatory variable. c. An outcome variable. d. An interfering variable. Use the best answer to complete these statements. 14. Two major branches of statistics are. and. 15. Two uses of probability are . and 16. The group of all subjects under study is called a(n) 17. A group of subjects selected from the group of all subjects under study is called a(n). 18. Three reasons why samples are used in statistics are а. b. с. 19. The four basic sampling methods are b. c. d. а. 20. A study that uses intact groups when it is not possible to randomly assign participants to the groups is called a(n). - study.
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